- heading card
- heading dial
- 航向: -方位指示器 course-and-bearing in ...
- 刻度盘: division circle; dial scale; ...
- 反向刻度盘: reverse card
- 双向刻度: centre zero scale; centre-zero scale
- 刻度盘: division circle; dial scale; graduated circle; graduated disk; index(ing) plate; circular division
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